Abstract: A method of making a light guide for an aircraft passenger cabin is provided. The method includes determining, for each of a plurality of points on an interior surface of the cabin, a corresponding fixture angle from a light fixture receptacle, a distance, and an angle of incidence at the point. The method also includes calculating an incident light intensity for each of the plurality of points, assuming a light source that emits light of uniform intensity at each fixture angle. Additionally, the method includes calculating a relative ray strength from each fixture angle needed to produce a desired incident light intensity at each corresponding point, and disposing a plurality of light extraction features on a unit length of the light guide such that at least one of a number and a size of the light extraction features are determined based on the relative ray strength for that fixture angle.

Abstract: A method and device for generating natural motion lighting patterns on the ceiling of an aircraft cabin are disclosed. The device includes at least two lighting elements, each outputting light. The device also includes a fixed common light modulation element positioned above the at least two lighting elements. Finally, the device includes a controller having outputs coupled to the at least two lighting elements and configured to separately vary an intensity of the light produced by each of the at least two lighting elements such that a light pattern produced by the light from each of the at least two lighting elements passing through the fixed common light modulation element simulates natural motion. The at least two lighting elements are preferably light emitting diodes. The fixed common light modulation element is one of a lens, mask or filter. The device may include additional light modulation elements, either common or for each lighting element.

Abstract: A method and apparatus for providing a closing force. The apparatus comprises a stowage bin, a number of sensors that measure a number of forces on the stowage bin, an assist mechanism that provides a closing force, a controller that compares data from the number of sensors, and an adjustment mechanism that adjusts the closing force based on the data from the number of sensors. The assist mechanism has a mechanical advantage that changes to provide the closing force.

Abstract: A method and apparatus for providing a closing force. The apparatus comprises a stowage bin, a number of sensors that measure a number of forces on the stowage bin, an assist mechanism that provides a closing force, a controller that compares data from the number of sensors, and an adjustment mechanism that adjusts the closing force based on the data from the number of sensors. The assist mechanism has a mechanical advantage that changes to provide the closing force.

Abstract: A method and device for generating natural motion lighting patterns on the ceiling of an aircraft cabin are disclosed. The device includes at least two lighting elements, each outputting light. The device also includes a fixed common light modulation element positioned above the at least two lighting elements. Finally, the device includes a controller having outputs coupled to the at least two lighting elements and configured to separately vary an intensity of the light produced by each of the at least two lighting elements such that a light pattern produced by the light from each of the at least two lighting elements passing through the fixed common light modulation element simulates natural motion. The at least two lighting elements are preferably light emitting diodes. The fixed common light modulation element is one of a lens, mask or filter. The device may include additional light modulation elements, either common or for each lighting element.

Abstract: A method of making a light guide for an aircraft passenger cabin is provided. The method includes determining, for each of a plurality of points on an interior surface of the cabin, a corresponding fixture angle from a light fixture receptacle, a distance, and an angle of incidence at the point. The method also includes calculating an incident light intensity for each of the plurality of points, assuming a light source that emits light of uniform intensity at each fixture angle. Additionally, the method includes calculating a relative ray strength from each fixture angle needed to produce a desired incident light intensity at each corresponding point, and disposing a plurality of light extraction features on a unit length of the light guide such that at least one of a number and a size of the light extraction features are determined based on the relative ray strength for that fixture angle.